Gas burner



June 4, 1957 H, D. DUFAULT ETAL v2,794,497

GAS BURNER Filed Feb. 1, 1955 INVENTOR. /fwr f/ .3.11 l 3 l u \\J I n ID b i l b III.:l IMQ. Illu IIrI Ill. Il l...-

United States Patent C GAS BURNER Homer D. DuFault, Easthampton, andErnest A. Walen, Longmeadow, Mass.

Application February 1, 1955, Serial No. 485,378

2 Claims. (Cl. 15S- 99) This invention relates toV new and usefulimprovements in gas burning apparatus and the principal objects of theinvention are directed to gas burning apparatus which is arranged andadapted particularly for broiling purposes.

For efficient broiling purposes, it is necessary that heat be directeddownwardly onto the material being broiled and to that end' theapparatus of this invention is constructed and arranged so as to providea large area of downwardly directed heat where'the heat vissubstantially uniform throughoutA the heating area;

For the most satisfactory broiling operation heat is provided by aluminousv ame and, according to this invention, a plurality of longluminous flame jets are provided which are surmounted by heat reflectingmeans. The ame jets are supplied with properly distributed secondary airfor the utmost eiciency.

According to the invention in a general way, a burner bar is providedhaving separate gas and air channels with gas and air ports leading fromsaid channels. Raw gas is supplied to the gas channel, and air undermore or less pressure is supplied to the air channel. For manufacturingreasons the gas and air may be provided in an integral unit or they maybe secured together units.

The gas and air ports are relatively arranged so that suicient air isdischarged so as to support combustion and to provide the desiredelongated side-by-side luminous tongues of ame which are rather thin asdistinguished from fat, bushey, tongues.

The burner is so arranged that a multiplicity of the flame tonguesextend over a considerable area and by providing reecting means over theame tongues there is a larger heating area which is particularly desiredfor broiling purposes.

The apparatus is adapted for use in the broiling compartment of a rangeor the like or in a compartment constructed for broiling purposes and,as a feature of the invention, means is provided for supplying secondaryair according to the quantity and pressure desired and necessary for theluminous flame operation of the apparatus.

All of the above cited objects, we accomplish by means of such structureand relative arrangement of parts thereof, as will fully appear by aperusal of the description below and by various specific features whichwill be hereinafter set forth.

To these above and other'ends and with the foregoing and various otherand ancillary features and advantages and objects of our invention aswill become more readily apparent as the description proceeds, ourinvention consists in certain features of novelty, in a mode ofoperation, and in the combination, organization, and arrangement ofparts as will be hereinafter more particularly pointed out in the claimshereunto annexed and more fully described and referred to in conjunctionwith the accompanying drawings wherein:

Fig. 1 is a side elevational view of a burner embodying the novelfeatures of the invention;

A .2,794,497 `Patented June 4,. 1957 ice Fig. 2 is a transversesectional elevational view'through the burner shown in Fig. l and havinga reecting plate associated therewith; and

Fig. 3 is a sectional elevational view through a compartment forbroiling purposes having the. apparatus of the invention associatedtherewith.

Referring now to the'drawings more in detail theY in; vention will befully described.

An elongated burner bar is shown at 2 which has separate upper gas andlower airchannelsV 4 and6 therealong. Thebar is formed to close'thechannels at one end thereof and'opposite ends of the channels areadapted at Sand 10 to receive gas and air supply connections.

A continuous flange portion 12 extends-outwardly along opposite side andend of the bar, as shown. The bar 2 in one Way is formed'so that'the`air channel thereof gradually narrows fromf the inlet to its closed end,asV shown, but such features may not be necessary or desired in allcases.

A plurality of gas ports 14 in spaced relation are provided along thesides of the bar 2 beneath the ange 12 which extend from the gas channel4. Other. ports 16 for air discharge in spaced relation are providedalong the bar which extend from'the'air channel 6.

The-ports`14 and` 16 are provided along opposite sides j and the closedend ofthe burner and, as shown, the gas and air ports are inA verticallalignment. The' size and spacing of the ports will be determined by thespecific conditions that are to be met and the relative arrangement ofthe gas and air ports may be varied.

A compartment 20 is shown in Fig. 3 which is formed by walls 22, 24, 26,and 28 which may represent the walls of a range or the like. A shelf isrepresented by 32 for a broiling pan and may be supported by run ways34. A door is represented by 36.

The burner bar 2 is supported in the upper portion of the compartment2t! and its open end may extend through the wall 22.

A gas supply line is represented by 40 which is connected by a conduit42 to the gas channel of the burner bar. An air duct 44 connects the airchannel of the burner bar to the supply means such as a small blower,fan, air turbine, or the like, indicated by 46 which is operated by amotor 48.

A reilecting member 50 is disposed over the burner bar 2. This will takethe form of a corrugated plate formed from stainless steel or the like.Said plate 50 may be secured in spaced relation to the upper side of theburner bar by spacers 52 and screws 54 or the like.

According to the invention it is desired that gas and air be deliveredto the burner simultaneously. To that end a valve 54 in the gas line 42of the lever type having an operating lever 56 movably outwardly to openposition is provided.

The lever 56 is connected by member 58 to arm 60 of a switch as shown sothat as the valve is opened the switch is closed. Connections 62 and 64connect the switch to one side of a power supply line 66 which of coursemay be a suitable source of D. C. or A. C. energy and to the motor 48.The motor is connected by 68 to supply line 66.

Thus as the burner is supplied with gas and air elongated luminoustongues are provided at opposite sides of the burner 2 and the reliector50 directs heat downwardly as desired.

The control apparatus for the gas and air may take various forms itbeing desired to provide suicient secondary air at such a pressure aswill sustain, as near as possible, complete combustion and provide amultiplicity of elongated luminous tongues at opposite sides and end ofthe burner.

The invention may be embodied in other spe-cie forms without departingfrom the essential characteristics thereof. Hence, the presentembodiments are therefore to be considered in all respects merely asbeing Villustrative and not as being restrictive, the scope of theinvention being indicated by the appended claims rather than by theforegoing description andY all modifications and variations as fallwithin the meaning and purview and range Vof equivalency of the appendedclaims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the UnitedStates is:

1. Gas burner apparatus for horizontal disposition in the compartment ofa range for broiling purposes comprising, a unitary body havingelongated horizontal and vertically spaced lower and intermediate andupper walls connected at opposite sides by longitudinal vertically dis-2. Gas burner apparatus for horizontal disposition in the compartment ofa range for broiling purposes comprising, a unitary body havingelongated horizontal and vertically spaced lower and intermediate andupper walls connected at opposite sides by longitudinal verticallydisposed side walls and at outer ends by a vertical end wall providingseparate longitudinally extending lower air and upper gas channelshaving air and gas inlets at rear ends thereof, said lower andintermediate wall relatively converging from rear to outer ends thereof,longitudinally extending side anges projecting laterally outwardly fromupper portions of said side walls, said side walls 1 provided with ahorizontal row of relatively spaced gas posed side walls and at outerends by a Vertical end wall 'j extending side tianges projectinglaterally outwardly from upper portions of said side walls, said sidewalls provided with a horizontal row of relativelyy spaced gas portsfrom said gas channel disposed below and adjacent said side anges andwith a horizontal row of longitudinally spaced air ports from said airchannel disposed vvertically below said gas ports, said gas and airports arranged to direct jets of gas and air horizontally outwardly.

ports from said gas channel disposed below and adjacent said sideflanges and with a horizontal row of longitudinally spaced air portsfrom said air channel disposed vertically below said gas ports, said gasand air ports arranged toA direct jets of gas and air horizontallyoutwardly, a reflector plate disposed above said upper wall havinglongitudinal side portions extending horizontally outwardly along saidbody.

References Cited in the iile of this patent UNITED STATES PATENTS Dow etal. July 24, 1956

